<template>
  <div>
    <!-- 用户导入对话框 -->
    <el-dialog :title="upload.title" :visible.sync="upload.open" width="400px" append-to-body>
      <el-upload
        ref="upload"
        :limit="1"
        accept=".xlsx, .xls"
        :headers="upload.headers"
        :action="upload.url + '?updateSupport=' + upload.updateSupport"
        :disabled="upload.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :auto-upload="false"
        drag
      >
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip text-center" slot="tip">
          <div class="el-upload__tip" slot="tip">
            <el-checkbox v-model="upload.updateSupport"/>
            是否更新已经存在的用户数据
          </div>
          <span>仅允许导入xls、xlsx格式文件。</span>
          <el-link type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;" @click="importTemplate">下载模板</el-link>
        </div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>

export default {
  name: 'ImportFile',
  props: {
    upload: {
      open: true,             // 是否显示
      title: '导入文件',       // 弹出层标题（导入）
      isUploading: false,    // 是否禁用上传
      updateSupport: 0,      // 是否更新已经存在的用户数据
      headers: '',           // 设置上传的请求头部
      url: '',               // 上传的地址
      templateUrl: '',       // 模板下载路径
      // 模板下载名称
      templateName: ''
    }
  },
  data() {
    return {}
  },
  beforeCreate() {
  },
  mounted() {
  },
  methods: {
    /** 下载模板操作 */
    importTemplate() {
      this.download(this.upload.templateUrl, {}, this.upload.templateName + `_${new Date().getTime()}.xlsx`)
    },
    // 文件上传中处理
    handleFileUploadProgress(event, file, fileList) {
      console.log('文件上传中处理')
      console.log(event)
      console.log(file)
      console.log(fileList)
      this.upload.isUploading = true
    },
    // 文件上传成功处理
    handleFileSuccess(response, file, fileList) {
      console.log('文件上传成功处理')
      console.log(response)
      console.log(file)
      console.log(fileList)
      this.upload.open = false
      this.upload.isUploading = false
      this.$refs.upload.clearFiles()
      this.$alert('<div style=\'overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;\'>' + response.msg + '</div>', '导入结果', { dangerouslyUseHTMLString: true })
      // 调用父组件的方法
      console.log('调用父组件的方法success')
      this.$emit('success')
    },
    // 提交上传文件
    submitFileForm() {
      console.log('上传参数:' + JSON.stringify(this.upload))
      this.$refs.upload.submit()
    },
    // 取消按钮
    cancel() {
      this.$refs.upload.clearFiles()
      this.upload.open = false
    }
  }
}
</script>

